Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac9934855988d6f…

MALICIOUS

PDF

45.9 KB Created: 2020-09-30 21:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 299c73c1ea836429b25c1f54c70d7511 SHA-1: d81d0b8229fa939c1554b2f3c435ce3e4ad53dd2 SHA-256: fac9934855988d6f6266de30d363dbd9dcb519841f4022a30d80aaa472f5b7c8
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/strik?keyword=upsc+optional+sociology+syllabus+in+hindi+pdf+download In PDF document text
    • http://files.davidlynchart.com/uploads/1/3/0/7/130739510/67fe09cbab94.pdfIn PDF document text
    • http://rorupol.thecatsmeowtarotandtalismans.com/uploads/1/3/1/0/131070027/9267947.pdfIn PDF document text
    • http://files.maryjanescott.com/uploads/1/3/2/6/132681783/48d7637.pdfIn PDF document text
    • https://site-1036917.mozfiles.com/files/1036917/54514875202.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/dasutopanij.pdfIn PDF document text
    • https://site-1036874.mozfiles.com/files/1036874/vowuloxapuginag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c678cca4-b479-43db-a871-bbdd6652de86/wosixatije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e15f8c1-c696-476c-b809-f6e44ab4d4bc/24738778664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26d33819-b9e1-4e27-9422-4a15ed57e2eb/lifigipizujidadid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd2193c2-6c64-45f3-b8e7-e26a712289b5/36690208288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc11727c-e24c-4d4e-a4f9-98b1d935c7ed/3785272313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e29bbecf-864a-41a0-81db-5b2004f6af88/letabogigaroluraduveviwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9da63f7c-c688-4f04-baf5-55598a4ec7f7/28147350917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44914892-f060-42a9-b539-fffb06efd6c3/59703193878.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7496 5648 bytes
SHA-256: 9bbe544be03413af3e15e1ce2499ba427b954a5919c8b1895efdb89bbc7b325c
font_01_sfnt_off000087de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DE 10084 bytes
SHA-256: 128f8f607a29c757b97019d75b51b8937b81007e00979040c509804616c4de2a

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